On Wed, 16 Dec 2009 18:17:54 -0500, "Stormin Mormon"
wrote:

If you look at a portrait of the Mona Lisa, will you know if
you can paint?

I'm not sure looking at finished ducts tells if you can
install duct.

Well, I know it wouldn't help you. But, that's okay, because I'm not
talking to you. The guy my advice was directed towards is smart. He
probably has a rough idea of what his skill level is, and seeing what
the stuff looks like may be a big help.